To fight the imposter syndrome …
6.3.2026
RR (architect) approved my dashboard Go tool.
Helped out RS (tester) with Grafana dashboard.
23.2.2026
Deployed argocd to kind cluster.
20.2.2026
Added Slovakia/TFS to go.dev/wiki/GoUsers.
16.2.2026
SD, udajne najlepsi Go programmer v BA teame, mi dal takyto PR review
na slogger: “Nice idiomatic code. Kudos. Need some final touches.”
2025
- wrote ghleaks
- started gomonk.net
2024
2023
- wrote github.com/jreisinger/mathpractice
- trying to build cybersecurity program based on NIST
CSF 2.0 (
notes/sec/nist-csf.md)
- reviewing API security
(
notes/sec/api.md)
- embedding vulnerability scanning into CI/CD
(
.github/workflows/scan-vulns-go.yml)
- reviewed Go repojacking (
notes/sec/repojacking.md,
tools/cmd/gorepojack)
- reviewing and improving email security (DKIM, SPF,
DMARC)
- did and tested Datadog-Pagerduty integration to call us when there’s
an issue
- unified log attributes in Datadog
- wrote
sectools/scripts/httpver.sh to check HTTP
versions of our endpoints
- delivered company-wide presentation about data breach and
security
- obtained AWS Certified Cloud Practitioner
certification
- review what AWS accounts are integrated with DD and security
monitored (
sectools/dd-awsinfo)
- found and reported leaked git secrets
- documented and explained to engineers how to prevent it
- helped engineers to reviewed commited secrets
- found and reported public S3 buckets
(
sectools/aws-s3pub)
- lowered AWS and Datadog costs
(
sectools/aws-dbinfo)
- reviewed Kubernetes clusters security
2022
- understood and documented Kubernetes ingress WAF
- operated Kubernetes ingress WAF: whitelisting and deploying
rules
- built
kubectl-modsec to extract ModSecurity WAF
information from Kubernetes
- built (with P’s help) a dummy gRPC application
demologger-grpc to demonstrate and test logging and
tracing
- interviewed and evaluated cloud team candidates - mostly
developers
- set up and documented security monitoring: logs,
detection rules, alerting
- learned Datadog
- delivered company-wide presentation about security
monitoring
- [ongoing] operating security monitoring and handling alerts